/Engine/Source/Editor/UnrealEd/Public/Tools/InteractiveToolsCommands.h
Support for sharing UI commands between multiple Tools, where the shared command is not at the shared-between-modes level
bool FindOrCreateSharedCommand ( EStandardToolActions ActionID, [FToolActionCommand](API\Editor\UnrealEd\Tools\TInteractiveToolCommands\FToolActionCommand) & FoundOut )